Axial fan



FIG. 1 is a top left perspective view of the front of the axial fan showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a bottom side view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a top right perspective view of the back thereof; and,

FIG. 6 is a front view thereof. 

CLAIM The ornamental design for an axial fan, as shown and described. 